DWRA440A Crouzet USA, DWRA440A Datasheet
DWRA440A
Manufacturer Part Number
DWRA440A
Description
PHASE MONITORING RELAY, SPDT, 440VAC
Manufacturer
Crouzet USA
Series
WRAr
Datasheet
1.DWRS220A.pdf
(2 pages)
Specifications of DWRA440A
Contact Configuration
SPDT
Phase Type
3 Phase
Supply Voltage Max
440VAC
Switching Voltage Max
250VAC
Relay Mounting
DIN Rail
Width
48mm
Contact Voltage Ac Max
250V
Power Consumption
3VA
Contact Current Ac Max
10A
Height
69mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
CONTROLS
WRA SERIES
PHASE CONTROL RELAY
UL listed
• Monitors
• LED Relay Status Indicator
• SPDT 10 Amp Relay Output
MODE OF OPERATION:
The WRL Phase Control Relay monitors the sequence loss or reversal
of three phase power supplies. The output relay is energized when
the phase sequence is correct and is de-energize when the phase
sequence is wrong or one phase is lost. It monitors the symmetry
of 3 voltages and a loss of phase even when the voltage is reinjected
through a machine. The rate of asymmetry is controlled between 5%
and 15% by a top mounted potentiometer.
SPECIFICATIONS:
Input Power Directly
from controlled voltage ±15%
Power consumption . . . . . . . . . 3 VA at 220 V
Output
Contact material
Maximum Loading
Maximum switching voltage . . 250 VAC
Relay max. power rating . . . . . 220 VA
Mechanical life of relay . . . . . . 30 x 10
Electrical life of relay . . . . . . . . 2 x 10
Operating temperature
Weight . . . . . . . . . . . . . . . . . . . 7 oz. (200g)
Note: The alarm threshold adjustment is 5% to 15% of asymmetry between
the phases. The initial response time is .1 seconds at 5% asymmetry and 1
second at 15% after input power is applied. When a phase loss or failure
occurs, the “off delay” response time is 100 ms.
ORDERING INFORMATION:
R
204 Airline Drive, Suite 300, Coppell, Texas 75019 / Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com
. . . . . . . . . . . . . . . . . . . SPDT relay
Phase Sequence
Loss of Any Phase even if Induced Voltage
reaches 95% of Nominal Voltage
CSA recognized (220 VAC Version Only)
R S T
. . . . . . . . . . . AgCdO
D = DIN-rail mounting
L = 11 pin plug-in
P = 8 pin plug-in
. . . . . . . . . 10 AC resistive
. . . . . . . . 3 x 220 60 Hz
MOUNTING
. . . . . . +14°F to +140°F
R T S
3 x 380 60 Hz
3 x 440 60 Hz
5
6
operations at 2200VA resistive load
operations
R S T
Products and specifications subject to change without notice.
MOUNTING
Consult factory for application assistance.
L
8A DC inductive
250 VDC
80 W
-10°C to +60°C
R S
T
SERIES
SERIES
WRA
WRA
WIRING DIAGRAM:
START
STOP
DWRA
PWRA
LWRA
R = L1
S = L2
T = L3
INPUT POWER
12 14
380 A
11
11
1
1
R
d1
S
12
T
4
2
220A = 3 x 220 VAC
380A = 3 x 380 VAC
440A = 3 x 415/440 VAC
INPUT POWER
14
3
8
D1
N
R
5
3
CONTROLS
R
U
S
M
V
S
6
4
T
W
T
7
5
5-15
5
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DWRA440A Summary of contents
Page 1
CONTROLS WRA SERIES PHASE CONTROL RELAY UL listed CSA recognized (220 VAC Version Only) • Monitors Phase Sequence Loss of Any Phase even if Induced Voltage reaches 95% of Nominal Voltage • LED Relay Status Indicator • SPDT 10 Amp ...
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